CN109494958B - Swing motor - Google Patents
Swing motor Download PDFInfo
- Publication number
- CN109494958B CN109494958B CN201811583380.0A CN201811583380A CN109494958B CN 109494958 B CN109494958 B CN 109494958B CN 201811583380 A CN201811583380 A CN 201811583380A CN 109494958 B CN109494958 B CN 109494958B
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- metal
- piece
- positioning
- rotating shaft
- insulating
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- 239000002184 metal Substances 0.000 claims abstract description 87
- 229910052751 metal Inorganic materials 0.000 claims abstract description 87
- 239000003292 glue Substances 0.000 claims abstract description 27
- 238000009434 installation Methods 0.000 claims abstract description 7
- 239000011248 coating agent Substances 0.000 claims description 18
- 238000000576 coating method Methods 0.000 claims description 18
- 229910000976 Electrical steel Inorganic materials 0.000 claims description 10
- -1 polytetrafluoroethylene Polymers 0.000 claims description 8
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 8
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 8
- 239000012212 insulator Substances 0.000 claims description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 7
- 239000000853 adhesive Substances 0.000 abstract 2
- 230000001070 adhesive effect Effects 0.000 abstract 2
- 238000013461 design Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 239000000306 component Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 208000002064 Dental Plaque Diseases 0.000 description 1
- 206010061218 Inflammation Diseases 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000004054 inflammatory process Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000005339 levitation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000036632 reaction speed Effects 0.000 description 1
- 229940034610 toothpaste Drugs 0.000 description 1
- 239000000606 toothpaste Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K33/00—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system
- H02K33/02—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with armatures moved one way by energisation of a single coil system and returned by mechanical force, e.g. by springs
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Reciprocating, Oscillating Or Vibrating Motors (AREA)
- Motor Or Generator Frames (AREA)
Abstract
The invention relates to the technical field of electric toothbrushes, in particular to a swing motor which comprises a mounting shell, an end cover, a wire, a rotor component and a stator component, wherein the rotor component and the stator component are fixedly arranged in a containing cavity of the mounting shell through the end cover; one end of the rotating shaft respectively penetrates through the insulating piece and the first positioning adhesive piece and extends out of the end cover, and the other end of the rotating shaft penetrates out of the bottom of the installation shell; the first metal positioning piece is fixedly arranged on the first positioning adhesive piece and is connected with the two coils; the two coils are correspondingly arranged in the limit groove of the insulating piece; the two magnetic shoes of stator module locate the both sides of insulating part, and second metal locating part sets firmly on the second location glues the piece, and metal connecting piece's one end is connected in first metal locating part, and the other end is connected in second metal locating part, and the one end of wire is connected in second metal locating part, and its other end passes the end cover, and it has not only eliminated the cracked risk of wire, improves the reliability, and simple structure, and required with low costs, convenient to use, long service life, the noise is little, excellent in use effect can satisfy market demand.
Description
Technical Field
The invention relates to the technical field of electric toothbrush motors, in particular to a swing motor.
Background
In recent years, the electric toothbrush has been popular because it can more thoroughly remove dental plaque than a general toothbrush, reduce dental inflammation and dental bleeding, and more scientifically and effectively clean teeth. The core component is a motor of the electric toothbrush, and the motor is powered to drive the brush head of the toothbrush to rotate or vibrate to decompose toothpaste and carry out friction cleaning on teeth.
The electric toothbrush acoustic wave motor commonly used in the market drives the rotor to rotate by utilizing the magnetic interaction principle, and then the electric toothbrush acoustic wave motor is reset through a reset torsion spring to perform work again to rotate to the original position. In the prior art, 2 or more magnet materials or electromagnets after being electrified generate a magnetic field environment, and a reset torsion spring is sleeved on a rotor rotating shaft and fixed by screws or clamping grooves. The elastic element of the motor with the structure is easy to lose efficacy, and the motor shaft swing angle is small, so that the service life of the motor is shortened because of loose structure after the service time of the electric toothbrush is longer, the required cost is high, and the motor running sound is not ideal enough to control, so that the service effect of the electric toothbrush is affected.
Disclosure of Invention
In order to overcome the technical defects, the invention aims to provide the swing motor which not only eliminates the risk of wire breakage and improves the reliability, but also has the advantages of simple structure, low required cost, convenient use, long service life, low noise and good use effect, and can meet the market demand.
In order to achieve the above purpose, the present invention is realized by the following technical scheme:
a swing motor comprises a mounting shell, an end cover, a wire, a rotor component and a stator component which are fixedly arranged in a containing cavity of the mounting shell through the end cover;
the rotor assembly comprises an insulating part, a rotating shaft, two coils, a first positioning glue part, two first metal positioning parts and two metal connecting parts; one end of the rotating shaft penetrates through the insulating piece and the first positioning glue piece respectively and extends out of the end cover, and the other end of the rotating shaft penetrates out of the bottom of the installation shell; the two first metal positioning pieces are respectively fixedly arranged on the first positioning glue piece and are respectively connected with the two coils; the two coils are correspondingly arranged in the limit groove of the insulating piece;
the stator assembly comprises two magnetic shoes, a second positioning rubber piece and two second metal positioning pieces, wherein the two magnetic shoes are respectively and correspondingly arranged on two sides of the insulating piece, the two second metal positioning pieces are respectively and fixedly arranged on the second positioning rubber piece, and the second positioning rubber piece is sleeved on the first positioning rubber piece;
one end of each of the two metal connecting pieces is connected with the corresponding first metal locating piece, the other end of each of the two metal connecting pieces is connected with the corresponding second metal locating piece, one end of each of the wires is connected with the corresponding second metal locating piece, and the other end of each of the wires penetrates through the corresponding end cover.
More preferably, two sleeves are arranged on the rotating shaft, and the rotor assembly and the stator assembly are positioned on the rotating shaft by the two sleeves.
More preferably, the rotating shaft is provided with two bearings, and the two bearings locate the mounting shell on the rotating shaft.
More preferably, the two metal connecting pieces are respectively conductive metal elastic pieces.
More preferably, the two metal connectors are tension springs respectively.
More preferably, the two first metal positioning members and the two second metal positioning members are respectively conductive metal pins.
More preferably, the two first metal positioning members and the two second metal positioning members are copper pins respectively.
More preferably, the insulating member is an I-shaped insulating member.
More preferably, the insulating piece is an insulating rubber piece or a silicon steel sheet with an insulating coating on the surface.
More preferably, the coating on the silicon steel sheet is a polytetrafluoroethylene coating, and the thickness of the polytetrafluoroethylene coating is 0.1-0.3 mm.
In summary, the invention has the advantages that:
1. the coil of rotor subassembly is energized through conductive metal pin and conductive extension spring, and the coil motion draws forth the wire and does not move, has eliminated the cracked risk of wire, improves the reliability, and long service life, and the noise is little, excellent in use effect.
2. Compared with the existing spring motor, the spring motor has the advantages that the structure is simpler, the cost is reduced, the internal stress generated in the spring material is minimum due to the structural design of the spring, and the service life of the spring is longer.
3. The two magnetic shoes are respectively and correspondingly arranged on the two sides of the insulating piece, and an integrated structure is not adopted, so that the structure is simple, and the assembly, the disassembly and the use are convenient;
4. the insulating part adopts the I-shaped design, and the insulating part is an insulating rubber part or a silicon steel sheet with an insulating coating on the surface, so that the swing amplitude of the rotating shaft is increased, the use is convenient, the service life is prolonged, the noise is reduced, the use effect is good, and the market demand is met.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic diagram of an exploded construction of the present invention;
FIG. 3 is a cross-sectional view taken along line A-A of FIG. 1;
FIG. 4 is a cross-sectional view taken along line B-B in FIG. 1;
fig. 5 is a comparative table of experimental data relating to a conventional spring motor and the first and second embodiments of the present invention.
100. The device comprises a mounting shell, 101, an end cover, 102, a bearing, 200, a rotor assembly, 201, an insulating part, 202, a rotating shaft, 203, a coil, 204, a first positioning glue part, 205, a first metal positioning part, 206, a metal connecting part, 300, a stator assembly, 301, a magnetic shoe, 302, a second positioning glue part, 303, a second metal positioning part, 400, a wire, 500, a sleeve, 600 and a bearing.
Detailed Description
The invention will be further described with reference to the accompanying drawings and detailed description below:
example 1:
as shown in fig. 1, 2, 3 and 4, a swing motor includes a mounting housing 100, an end cover 101, a wire 400, and a rotor assembly 200 and a stator assembly 300 fixedly disposed in a receiving cavity of the mounting housing 100 through the end cover 101;
the rotor assembly 200 comprises an insulating member 201, a rotating shaft 202, two coils 203, a first positioning glue member 204, two first metal positioning members 205 and two metal connecting members 206; one end of the rotating shaft 202 passes through the insulating member 201 and the first positioning glue member 204 respectively and extends out of the end cover 101, and the other end of the rotating shaft passes out of the bottom of the installation shell 100; the two first metal positioning pieces 205 are respectively fixed on the first positioning glue piece 204 and are respectively connected with the two coils 203; the two coils 203 are correspondingly arranged in the limit groove of the insulating piece 201;
the stator assembly 300 comprises two magnetic shoes 301, a second positioning glue piece 302 and two second metal positioning pieces 303, wherein the two magnetic shoes 301 are respectively and correspondingly arranged on two sides of the insulating piece 201, the two second metal positioning pieces 303 are respectively and fixedly arranged on the second positioning glue piece 302, and the second positioning glue piece 302 is sleeved on the first positioning glue piece 204;
one end of each of the two metal connecting pieces 206 is connected to the two first metal positioning pieces 205, the other end is connected to the two second metal positioning pieces 303, one end of the wire 400 is connected to the two second metal positioning pieces 303, and the other end of the wire passes through the end cover 101.
Wherein, two sleeves 500 are provided on the rotating shaft 202, and the two sleeves 500 position the rotor assembly 200 and the stator assembly 300 on the rotating shaft 202.
Wherein, two bearings 600 are disposed on the rotating shaft 202, and the two bearings 600 locate the mounting housing 100 on the rotating shaft 202.
Wherein, the two metal connectors 206 are respectively conductive metal elastic members.
Wherein, the two metal connectors 206 are tension springs respectively.
Wherein the two first metal positioning members 205 and the two second metal positioning members 303 are respectively conductive metal pins.
Wherein the two first metal positioning members 205 and the two second metal positioning members 303 are copper pins, respectively.
Wherein the insulator 201 is an "I" insulator.
Wherein, the insulating part 201 is an insulating rubber part, which not only reduces the manufacturing cost of the motor, but also quickens the reaction speed, improves the vibration frequency and prolongs the service life.
The working principle is as follows: the circuit board with the inherent frequency switching power supply anode and cathode is used for supplying power (50-80 times per banknote), and the two coils 203 on the rotor assembly 200 are powered to generate electromagnetic force to generate deflection motion with the two permanent magnet tiles 301 of the stator assembly 300; the two first metal positioning piece metal pins 205 on the first positioning piece 204 and the two second metal positioning piece metal pins 303 on the second positioning piece 302 are respectively driven to radially deflect at one ends of the two metal connecting piece tension springs 206, and as the deflection angle is increased, the tension force of the two metal connecting piece tension springs 206 is synchronously increased, when the tension force is greater than the electromagnetic force generated by the coil 203 and the magnetic shoe 301, the rotor assembly 200 stops rotating, and when the coil 203 is reversely electrified, opposite movement is generated, and the reciprocating radial swing movement of the rotor assembly 200 relative to the stator assembly 300 is formed.
Example 2:
as shown in fig. 1, 2, 3 and 4, a swing motor includes a mounting housing 100, an end cover 101, a wire 400, and a rotor assembly 200 and a stator assembly 300 fixedly disposed in a receiving cavity of the mounting housing 100 through the end cover 101;
the rotor assembly 200 comprises an insulating member 201, a rotating shaft 202, two coils 203, a first positioning glue member 204, two first metal positioning members 205 and two metal connecting members 206; one end of the rotating shaft 202 passes through the insulating member 201 and the first positioning glue member 204 respectively and extends out of the end cover 101, and the other end of the rotating shaft passes out of the bottom of the installation shell 100; the two first metal positioning pieces 205 are respectively fixed on the first positioning glue piece 204 and are respectively connected with the two coils 203; the two coils 203 are correspondingly arranged in the limit groove of the insulating piece 201;
the stator assembly 300 comprises two magnetic shoes 301, a second positioning glue piece 302 and two second metal positioning pieces 303, wherein the two magnetic shoes 301 are respectively and correspondingly arranged on two sides of the insulating piece 201, the two second metal positioning pieces 303 are respectively and fixedly arranged on the second positioning glue piece 302, and the second positioning glue piece 302 is sleeved on the first positioning glue piece 204;
one end of each of the two metal connecting pieces 206 is connected to the two first metal positioning pieces 205, the other end is connected to the two second metal positioning pieces 303, one end of the wire 400 is connected to the two second metal positioning pieces 303, and the other end of the wire passes through the end cover 101.
Wherein, two sleeves 500 are provided on the rotating shaft 202, and the two sleeves 500 position the rotor assembly 200 and the stator assembly 300 on the rotating shaft 202.
Wherein, two bearings 600 are disposed on the rotating shaft 202, and the two bearings 600 locate the mounting housing 100 on the rotating shaft 202.
Wherein, the two metal connectors 206 are respectively conductive metal elastic members.
Wherein, the two metal connectors 206 are tension springs respectively.
Wherein the two first metal positioning members 205 and the two second metal positioning members 303 are respectively conductive metal pins.
Wherein the two first metal positioning members 205 and the two second metal positioning members 303 are copper pins, respectively.
Wherein the insulator 201 is an "I" insulator.
Wherein, the insulating member 201 is a silicon steel sheet with an insulating coating on the surface.
Wherein the coating on the silicon steel sheet is a polytetrafluoroethylene coating, and the thickness of the polytetrafluoroethylene coating is 0.1-0.3 mm.
The working principle of the embodiment is the same as that of the first embodiment, except that the insulating piece 201 is a silicon steel sheet with an insulating coating on the surface, the coating on the silicon steel sheet is a polytetrafluoroethylene coating, and the thickness of the polytetrafluoroethylene coating is 0.1-0.3 mm.
In order to test the service life of the swing motor, the related experiments are carried out on the existing spring motor and the first and second embodiments of the invention;
test purpose: aiming at the phenomena of torsion reduction, irregular swinging pair degree, noise increase or shutdown of the toothbrush motor after the toothbrush motor continuously runs for a period of time, the magnetic levitation motor developed by the Tianfu motor is checked to improve the characteristics;
the testing method comprises the following steps: using an analog controller, the power supply of the controller outputs a power-on frequency of 50-80 times per second. After each 50 hours of operation after the motor was assembled with the brush head, an additional 200g of pressure load was applied to the brush head to detect the operating torque and noise of the motor.
The specific data are shown in fig. 5.
In summary, the coil of the rotor assembly is electrified through the conductive metal pin and the conductive tension spring, the coil moves and the lead-out wire does not move, the risk of wire breakage is eliminated, the reliability is improved, the service life is long, the noise is low, and the use effect is good.
Compared with the existing spring motor, the spring motor has the advantages that the structure is simpler, the cost is reduced, the internal stress generated in the spring material is minimum due to the structural design of the spring, and the service life of the spring is longer.
In addition, two magnetic shoes correspond respectively and locate the both sides of insulating part, do not adopt integral type structure, simple structure, and be convenient for equipment, dismantlement and use.
In addition, the insulating part adopts the I-shaped design, and the insulating part is an insulating rubber part or a silicon steel sheet with an insulating coating on the surface, so that the swing amplitude of the rotating shaft is increased, the use is convenient, the service life is prolonged, the noise is reduced, the use effect is good, and the market demand is met.
Various other corresponding changes and modifications will occur to those skilled in the art from the foregoing disclosure and are intended to be within the scope of the appended claims.
Claims (9)
1. A swing motor includes a mounting housing (100), an end cap (101), a wire (400)
And a rotor assembly (200) and a stator assembly (300) fixedly arranged in the accommodating cavity of the installation shell (100) through the end cover (101), and is characterized in that:
the rotor assembly (200) comprises an insulating part (201), a rotating shaft (202), two coils (203), a first positioning glue part (204), two first metal positioning parts (205) and two metal connecting parts (206); one end of the rotating shaft (202) respectively penetrates through the insulating piece (201) and the first positioning glue piece (204) and extends out of the end cover (101), and the other end of the rotating shaft penetrates out of the bottom of the installation shell (100); the two first metal positioning pieces (205) are respectively fixedly arranged on the first positioning glue piece (204) and are respectively connected with the two coils (203); the two coils (203) are correspondingly arranged in the limit groove of the insulating piece (201);
the stator assembly (300) comprises two magnetic shoes (301), a second positioning glue piece (302) and two second metal positioning pieces (303), wherein the two magnetic shoes (301) are respectively and correspondingly arranged on two sides of the insulating piece (201), and the two second metal positioning pieces (303) are respectively and fixedly arranged on the second positioning glue piece (302)
The second positioning glue piece (302) is sleeved on the first positioning glue piece (204);
one end of each of the two metal connecting pieces (206) is connected to each of the two first metal positioning pieces (205), the other end of each of the two metal connecting pieces is connected to each of the two second metal positioning pieces (303), one end of each of the wires (400) is connected to each of the two second metal positioning pieces (303), the other end of each of the wires penetrates through the end cover (101), and each of the two metal connecting pieces (206) is a tension spring.
2. The swing motor according to claim 1, wherein: two sleeves (500) are arranged on the rotating shaft (202), and the rotor assembly (200) and the stator assembly (300) are positioned on the rotating shaft (202) by the two sleeves (500).
3. The swing motor according to claim 1, wherein: two bearings (600) are arranged on the rotating shaft (202), and the two bearings (600) position the installation shell (100) on the rotating shaft (202).
4. The swing motor according to claim 1, wherein: the two metal connectors (206) are respectively conductive metal elastic pieces.
5. The swing motor according to claim 1, wherein: the two first metal positioning pieces (205) and the two second metal positioning pieces (303) are respectively conductive metal pins.
6. The swing motor according to claim 5, wherein: the two first metal positioning pieces (205) and the two second metal positioning pieces (303) are copper pins respectively.
7. The swing motor according to claim 1, wherein: the insulator (201) is an I-shaped insulator.
8. The swing motor according to claim 7, wherein: the insulating piece (201) is an insulating rubber piece or a silicon steel sheet with an insulating coating on the surface.
9. The swing motor according to claim 8, wherein: the coating on the silicon steel sheet is a polytetrafluoroethylene coating, and the thickness of the polytetrafluoroethylene coating is 0.1-0.3 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811583380.0A CN109494958B (en) | 2018-12-24 | 2018-12-24 | Swing motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811583380.0A CN109494958B (en) | 2018-12-24 | 2018-12-24 | Swing motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109494958A CN109494958A (en) | 2019-03-19 |
| CN109494958B true CN109494958B (en) | 2023-11-24 |
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ID=65711555
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811583380.0A Active CN109494958B (en) | 2018-12-24 | 2018-12-24 | Swing motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109494958B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111654176A (en) * | 2020-06-24 | 2020-09-11 | 庞茂强 | Novel vibration micromotor |
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| CN105375675A (en) * | 2015-11-06 | 2016-03-02 | 浙江省东阳市诚基电机有限公司 | SMT vibration motor structure |
| DE202016001059U1 (en) * | 2016-02-18 | 2016-03-18 | Gerhard Kocherscheidt | electric motor |
| CN205212674U (en) * | 2015-12-09 | 2016-05-04 | 东莞市凤岗潮鸿电机厂 | Sound wave motor for electric toothbrush |
| DE102015108207A1 (en) * | 2015-01-27 | 2016-07-28 | Ningbo Seago Electric Co., Ltd. | ENGINE |
| JP3208869U (en) * | 2016-03-16 | 2017-02-23 | 寧波賽嘉電器有限公司 | motor |
| CN207021878U (en) * | 2017-07-26 | 2018-02-16 | 浙江金达电机电器有限公司 | Toothbrush motor |
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| CN207504672U (en) * | 2017-10-23 | 2018-06-15 | 深圳市仓兴达科技有限公司 | A kind of Totally-enclosed-type vibrating motor |
| CN109067131A (en) * | 2018-09-13 | 2018-12-21 | 中科（深圳）创新创意科技有限公司 | A kind of electric toothbrush motor and the electric toothbrush comprising the electric toothbrush motor |
| CN209435086U (en) * | 2018-12-24 | 2019-09-24 | 东莞市天孚电机科技有限公司 | A kind of rotary actuator |
-
2018
- 2018-12-24 CN CN201811583380.0A patent/CN109494958B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20090131388A (en) * | 2008-06-18 | 2009-12-29 | 전진영 | Vibration motor |
| DE102015108207A1 (en) * | 2015-01-27 | 2016-07-28 | Ningbo Seago Electric Co., Ltd. | ENGINE |
| CN105375675A (en) * | 2015-11-06 | 2016-03-02 | 浙江省东阳市诚基电机有限公司 | SMT vibration motor structure |
| CN205212674U (en) * | 2015-12-09 | 2016-05-04 | 东莞市凤岗潮鸿电机厂 | Sound wave motor for electric toothbrush |
| DE202016001059U1 (en) * | 2016-02-18 | 2016-03-18 | Gerhard Kocherscheidt | electric motor |
| JP3208869U (en) * | 2016-03-16 | 2017-02-23 | 寧波賽嘉電器有限公司 | motor |
| CN207021878U (en) * | 2017-07-26 | 2018-02-16 | 浙江金达电机电器有限公司 | Toothbrush motor |
| CN207504672U (en) * | 2017-10-23 | 2018-06-15 | 深圳市仓兴达科技有限公司 | A kind of Totally-enclosed-type vibrating motor |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN109494958A (en) | 2019-03-19 |
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Address after: 523000, 7 building, 5 Industrial Zone, No. 3, Jun FA Road, Peng Wu Village, Dong Keng Town, Dongguan, Guangdong. Applicant after: Guangdong Tianfu Motor Technology Co.,Ltd. Address before: 523000, 7 building, 5 Industrial Zone, No. 3, Jun FA Road, Peng Wu Village, Dong Keng Town, Dongguan, Guangdong. Applicant before: DONGGUAN TIANFU MOTOR TECHNOLOGY Co.,Ltd. |
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